You can read about the preferred options in the link above, but I suggest you choose Option 2 in the first place, as this does not rely on an internet connection, and preserves all your recordings, if this is possible.

“Where’s ‘Jump to Time’ then? And all that other OldGen good stuff we were promised back, including the proper ‘Hide Channels’ and so on?” (Excerpt from ‘One Billboard Outside YouView Towers’, not coming soon to a box near you)